Cognitive Ability Taxonomy

Unified Taxonomy of Cognitive Ability: Cross-inventory, working taxonomy based on the work of several previous researchers, including Cattell, Horn, Carroll, and McGrew.

Schneider and McGrew (2012) present modifications to the Cattell-Horn-Carroll model of cognitive abilities, which we further modified (e.g., by hierarchically organizing the primary ability constructs and recognizing that there are currently probably up to 5 levels of  cognitive constructs that can be reflected in the hierarchy) to help establish an integrated model of cognitive abilities that utilizes a standardized nomenclature to avoid confusion of terms.

Looking for a particular construct? Use the Search function on the table below to search across all constructs and definitions in the table below. Use the filter fields at the top of each column to search within individual columns. Construct levels are separated by clear bullets (e.g., “◦” separates high level constructs from child constructs, “◦◦” separates child constructs from grandchild constructs, “◦◦◦” separates grandchild constructs from great grandchild constructs, etc.).

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All quotations/references on this page are from:

McGrew, K. S., LaForte, E. M., & Schrank, F. A. (2014). Woodcock Johnson IV Technical Manual. Rolling Meadows, IL: Riverside.

Schneider, W. J., & McGrew, K. (2012). The Cattell-Horn-Carroll model of intelligence. In D. Flanagan & P. Harrison (Eds.), Contemporary intellectual assessment: Theories, tests, and issues (3rd ed., pp. 99–144). New York: The Guilford Press.